CN116641971A - Self-resetting torsion limiter - Google Patents
Self-resetting torsion limiter Download PDFInfo
- Publication number
- CN116641971A CN116641971A CN202310523600.5A CN202310523600A CN116641971A CN 116641971 A CN116641971 A CN 116641971A CN 202310523600 A CN202310523600 A CN 202310523600A CN 116641971 A CN116641971 A CN 116641971A
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- Prior art keywords
- spherical column
- balls
- ball
- self
- output shaft
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention provides a self-resetting torsion limiter, which comprises an output shaft, a synchronous wheel and a torsion limiting assembly, wherein the output shaft is connected with the synchronous wheel; the torsion limiting assembly comprises a spherical column arranged in the synchronous wheel and a plurality of balls pressed on the circumferential surface of the spherical column; the distribution of the balls on two sides of at least one diameter of the circumferential surface of the spherical column is asymmetric, and a plurality of corresponding and consistent grooves are formed in the circumferential surface of one side of the spherical column, which faces the balls; when the balls are in one-to-one clamping fit with the grooves on the spherical column, the synchronous wheel drives the output shaft to synchronously rotate; and when the balls are separated from the grooves on the spherical column and are distributed in a dislocation mode, the output shaft is disconnected from the transmission of the synchronous wheel, and rotation is stopped. The invention ensures that all the balls can be meshed with the grooves one by one only by turning back to the original position, and ensures that the transmission parameters are unchanged after reset.
Description
Technical Field
The invention relates to the technical field of limiters, in particular to a self-resetting torsion limiter.
Background
The torque limiter (also called as a torque limiter, a safety coupling and a safety clutch) is a component for connecting the main motor and the working machine, and has the main function of overload protection; when the overload or mechanical failure causes the required torque to exceed the set value, the torque limiter limits the torque transmitted by the transmission system in a slipping mode, and the connection is automatically restored after the overload condition disappears. This prevents mechanical damage and avoids costly failure losses.
In the prior art, the torsion limiter comprises a friction type torsion limiter and a ball type torsion limiter; the ball mechanism is arranged in the ball type torque limiter, the driving side and the driven side are contacted with the groove through the balls, and when the torque exceeds a set value, the balls are separated from the groove, so that the driving transmission and the driven transmission are separated. The steel balls of the traditional ball type torsion limiter are distributed in a circumferential regular array, and the engaged positions of the steel balls and the grooves are also distributed in a regular manner, so that when one position is disengaged and the next angle position is engaged, the torsion limiter is disengaged and reset, the angle correspondence of the front and rear mechanisms of the torsion limiter is not up, and the ball type torsion limiter cannot be used in occasions with corresponding angle requirements.
Disclosure of Invention
Therefore, the invention provides a self-resetting torsion limiter to solve the problems, ensure that all balls can be meshed with grooves one by one only by turning back to the original position, and ensure that transmission parameters are unchanged after resetting.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the self-resetting torsion limiter comprises an output shaft, wherein a synchronous wheel is arranged on the output shaft, and the output shaft is in transmission connection with the synchronous wheel or is disconnected from the transmission connection with the synchronous wheel through a torsion limiting assembly; the torsion limiting assembly comprises a spherical column arranged in the synchronous wheel and a plurality of balls pressed on the circumferential surface of the spherical column; the distribution of the balls on two sides of at least one diameter of the circumferential surface of the spherical column is asymmetric, and a plurality of corresponding and consistent grooves are formed in the circumferential surface of one side of the spherical column, which faces the balls; when the balls are in one-to-one clamping fit with the grooves on the spherical column, the synchronous wheel drives the output shaft to synchronously rotate; and when the balls are separated from the grooves on the spherical column and are distributed in a dislocation mode, the output shaft is disconnected from the transmission of the synchronous wheel, and rotation is stopped.
Further, the spacing between at least two balls located on both sides of at least one diameter of the circumferential surface of the spherical column is different.
Further, the intervals between the balls in four areas, in which the circumferential surface of the spherical column is divided by two diameters perpendicular to each other, are different.
Further, the device further comprises an adjusting assembly, wherein the adjusting assembly is arranged on the output shaft and is connected with the balls of the torsion limiting assembly, and the balls are pressed in the grooves of the spherical column through the adjusting assembly.
Further, the adjusting assembly comprises an adjusting piece and an elastic piece connected with the adjusting piece and the ball, the elastic piece is compressed between the adjusting piece and the ball, and the compression amount of the elastic piece is adjusted by adjusting the adjusting piece, so that the disengaging force acting on the ball, which is separated from the groove of the spherical column, is adjusted.
Further, the adjusting piece comprises a locknut and a pre-tightening ring connected with the locknut, the elastic piece comprises a spring and a spring ring, the spring is pre-pressed in the pre-tightening ring, and the spring is connected with the ball through the spring ring so as to enable the ball to be tightly pressed in the groove of the spherical column; the compression amount of the spring is changed by adjusting the locknut, so that the pressure acting on the ball by the spring ring is changed, and the disengagement force of the ball from the groove of the spherical column is adjusted.
Further, the pre-tightening ring can be provided with springs with different compression amounts.
Further, the spring is a wave spring, a disc spring or a spiral spring.
Further, one end of the ball towards the groove is hemispherical, and the shape of the groove is correspondingly consistent.
Further, the spherical column is arranged between the output shaft and the synchronous wheel through a bearing.
The technical scheme provided by the invention has the following beneficial effects:
firstly, a plurality of balls of the torsion limiting assembly are irregularly distributed on the circumferential surface, and a plurality of corresponding and consistent grooves are formed in the circumferential surface of one side, facing the balls, of the spherical column, so that the plurality of balls can be clamped with the grooves only under a unique specific angle, all the balls can be meshed with the grooves only when the balls are rotated back to the original position after overload, and the angle correspondence of mechanisms positioned at two sides of the torsion limiter is avoided before and after overload reset;
secondly, the invention adopts the adjusting component to press the ball into the groove of the spherical column, and the disengaging force of the ball out of the groove of the spherical column can be adjusted by the adjusting component, thereby achieving the stepless adjustment of disengaging torque in a certain range; at the same time, the adjustment of the disengagement torque for different span ranges can be achieved by replacing the springs in the adjustment assembly.
Drawings
FIG. 1 is a schematic view showing the structure of a self-resetting torsion limiter of the present invention;
FIG. 2 is a cross-sectional view of the self-resetting torque limiter of the present invention under normal operation;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a cross-sectional view of the self-resetting torque limiter of the present invention in a loaded state;
FIG. 5 is an enlarged view of a portion of FIG. 4;
fig. 6 shows a side view of the spherical column of the present invention.
Description of the reference numerals:
1-output shaft, 2-synchronizing wheel, 3-torsion limiting component, 31-sphere post, 311-recess, 32-ball, 4-adjusting component, 41-adjusting piece, 411-locknut, 412-pretension ring, 42-elastic piece, 421-spring, 422-spring ring, 5-bearing.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
Meanwhile, the directions of up, down, front, back, left, right, etc. in this embodiment are merely references to one direction, and do not represent directions in actual use. In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
The invention will now be further described with reference to the drawings and detailed description.
Referring to fig. 1 to 6, as a preferred embodiment of the present invention, a self-resetting torque limiter is provided, which includes an output shaft 1, a synchronizing wheel 2 is disposed on the output shaft 1, and the output shaft 1 is in driving connection with the synchronizing wheel 2 or is disconnected from driving connection with the synchronizing wheel 2 through a torque limiting assembly 3. The synchronous wheel 2 is used for being connected with a driving machine, so that the synchronous wheel 2 rotates under driving, namely, driving, the output shaft 1 is used for being connected with a working machine, and linkage between the driving machine and the working machine is realized through cooperation of the output shaft 1, the synchronous wheel 2 and the torsion limiting assembly 3. When the torque transmitted by the synchronizing wheel 2 is within the preset torque, the torque limiting component 3 is propped between the synchronizing wheel 2 and the output shaft 1, so that the output shaft 1 and the synchronizing wheel 2 synchronously rotate; when the torque transmitted by the synchronizing wheel 2 exceeds the preset torque, the torque limiting assembly 3 slips relative to the output shaft 1, and the synchronous rotation of the output shaft 1 and the synchronizing wheel 2 is disconnected.
The torque limiting assembly 3 includes a spherical column 31 disposed in the synchronizing wheel 2, and a plurality of balls 32 pressed on a circumferential surface of the spherical column 31. Wherein, the spherical column 31 is arranged between the output shaft 1 and the synchronous wheel 2 through the bearing 5; referring to fig. 6, the balls 32 are irregularly distributed on the circumferential surface, specifically, the balls 32 located on two sides of at least one diameter of the circumferential surface of the spherical column 31 are asymmetrically distributed, further, the intervals between the balls in four areas divided by two diameters perpendicular to each other on the circumferential surface of the spherical column 31 are different, and a plurality of corresponding and consistent grooves 311 are provided on the circumferential surface of one side of the spherical column 31 facing the balls 32; when the balls 32 are in one-to-one clamping fit with the grooves 311 on the spherical column 31, the synchronous wheel 2 drives the output shaft 1 to synchronously rotate; when the balls 32 are separated from the grooves 311 on the spherical column 31 and are distributed in a dislocation mode, the output shaft 1 is disconnected from the transmission of the synchronous wheel 2, and the rotation is stopped. Thus, when the device is operating normally, as shown in fig. 2 to 3, the balls 32 are pressed into the grooves 311 of the spherical column 31, the synchronizing wheel 2 is connected with the output shaft 1 in a transmission way, and the synchronizing wheel 2 drives the output shaft 1 to rotate synchronously; when overload occurs, referring to fig. 4 to 5, the balls 32 are disengaged from the grooves 311 of the spherical column 31, the output shaft 1 is disconnected from the driving connection with the synchronizing wheel 2, the synchronizing wheel 2 idles, and the output shaft 1 stops rotating. In this embodiment, the balls 32 in the torsion limiting assembly 3 are irregularly distributed, so that the balls 32 can be clamped with the grooves 311 in a one-to-one correspondence only under a unique specific angle, and the balls 32 cannot be reset into the grooves 311 in other turning angles, so that all the balls 32 can be meshed with the grooves 311 only when turning back to the original position after overload, and the angle correspondence of the mechanisms at two sides of the torsion limiter is avoided before and after overload reset.
One end of the ball 32 facing the groove 311 of the spherical column 31 is hemispherical, and the shape of the groove 311 of the spherical column 31 corresponds to that of the ball 32.
With continued reference to fig. 1, 2 and 4, the device further includes an adjusting component 4, the adjusting component 4 is disposed on the output shaft 1, the adjusting component 4 is connected with the balls 32 of the torsion limiting component 3, and the balls 32 are pressed in the grooves 311 of the spherical column 31 by the adjusting component 4. Wherein, the adjusting assembly 4 comprises an adjusting member 41 and an elastic member 42 connecting the adjusting member 41 and the ball 32, wherein the elastic member 42 is compressed between the adjusting member 41 and the ball 32, and the releasing force of the ball 32 from the groove 311 of the spherical column 31 is adjusted by adjusting the compressing amount of the elastic member 42 by adjusting the adjusting member 41. Further, the adjusting member 41 includes a locknut 411 and a pre-tightening ring 412 connected to the locknut 411, the elastic member 42 includes a spring 421 and a spring ring 422, the spring 421 is pre-pressed in the pre-tightening ring 412, the spring 421 is connected to the ball 32 through the spring ring 422, so that the ball 32 is compressed in the groove 311 of the spherical column 31; by adjusting the locknut 411, the compression amount of the spring 421 is changed, and the pressure acting on the ball 32 by the spring ring 422 is further changed, so as to adjust the disengagement force of the ball 32 from the groove 311 of the spherical post 31. The spring 421 may be, but is not limited to, a wave spring, a disc spring or a coil spring, and the number of the springs 421 may be one or more, which is not limited herein. In the present embodiment, the torque set value of the torque limiting assembly 3 is preset, that is, the compression amount of the spring 421 is adjusted by the locknut 411; during normal operation, the balls 32 are pressed in the grooves 311 of the spherical column 31 by the snap rings 422, so that the output shaft 1 is in transmission connection with the synchronizing wheel 2, and the synchronizing wheel 2 transmits torque through the balls 32 to drive the output shaft 1 to synchronously rotate. When overload occurs, that is, the torque transmitted by the synchronizing wheel 2 exceeds the preset torque, that is, the torque overcomes the resistance between the balls 32 and the output shaft 1, the axial force borne by the balls 32 is larger than the pretightening force of the elastic piece 42, the balls 32 are separated from the grooves 311 of the spherical column 31, the transmission connection between the synchronizing wheel 2 and the output shaft 1 is disconnected, the synchronizing wheel 2 idles, and the output shaft 1 stops rotating. When the torque transmitted by the driving machine is within the preset torque, the balls 32 are pressed against the grooves 311 of the spherical column 31 under the pressure of the elastic member 42, at this time, each ball 32 is not necessarily located at a position where the balls are in one-to-one fit with the grooves 311 of the spherical column 32, and when the balls 32 rotate back to the initial state, that is, each ball 32 is in one-to-one fit with the grooves 311 of the spherical column 31, the synchronous wheel 2 and the output shaft 1 realize synchronous rotation again. Because of the spring pre-pressing mode adopted in the embodiment, the compression amount of the spring 421 can be changed by adjusting the locknut 411 to enable the pre-tightening ring 413 to further change the pressure acting on the spring ring 422, so as to realize stepless adjustment of the disengaging torsion in a certain range. Further, the pre-tightening ring 413 may be provided with springs 421 having different compression amounts, so that the adjustment of torsion force of different spans can be achieved by changing the springs.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A self-resetting torsion limiter, characterized by: the torque limiting assembly is used for limiting the torque of the output shaft, so that the torque of the output shaft is limited by the torque limiting assembly; the torsion limiting assembly comprises a spherical column arranged in the synchronous wheel and a plurality of balls pressed on the circumferential surface of the spherical column; the distribution of the balls on two sides of at least one diameter of the circumferential surface of the spherical column is asymmetric, and a plurality of corresponding and consistent grooves are formed in the circumferential surface of one side of the spherical column, which faces the balls; when the balls are in one-to-one clamping fit with the grooves on the spherical column, the synchronous wheel drives the output shaft to synchronously rotate; and when the balls are separated from the grooves on the spherical column and are distributed in a dislocation mode, the output shaft is disconnected from the transmission of the synchronous wheel, and rotation is stopped.
2. A self-resetting torsion limiter according to claim 1, wherein: the distance between at least two balls positioned on two sides of at least one diameter of the circumferential surface of the spherical column is different.
3. A self-resetting torque limiter as defined in claim 2, wherein: the ball bearing is arranged on the periphery of the spherical column, and the ball bearing is arranged on the periphery of the spherical column.
4. A self-resetting torsion limiter according to claim 1, wherein: the torque limiting device comprises a spherical column, a torque limiting assembly, an adjusting assembly and a groove, wherein the torque limiting assembly is arranged on the spherical column, the ball limiting assembly is arranged on the spherical column, the adjusting assembly is arranged on the output shaft, the ball limiting assembly is connected with the torque limiting assembly, and the ball limiting assembly is pressed in the groove of the spherical column through the adjusting assembly.
5. The self-resetting torque limiter of claim 4, wherein: the adjusting assembly comprises an adjusting piece and an elastic piece connected with the adjusting piece and the ball, the elastic piece is compressed between the adjusting piece and the ball, and the compression amount of the elastic piece is adjusted by adjusting the adjusting piece, so that the disengaging force acting on the ball, which is separated from the groove of the spherical column, is adjusted.
6. The self-resetting torque limiter of claim 5, wherein: the adjusting piece comprises a locknut and a pre-tightening ring connected with the locknut, the elastic piece comprises a spring and a spring pressing ring, the spring is pre-pressed in the pre-tightening ring and is connected with the ball through the spring pressing ring, so that the ball is pressed in the groove of the spherical column; the compression amount of the spring is changed by adjusting the locknut, so that the pressure acting on the ball by the spring ring is changed, and the disengagement force of the ball from the groove of the spherical column is adjusted.
7. The self-resetting torque limiter of claim 6, wherein: the pre-tightening ring can be provided with springs with different compression amounts.
8. The self-resetting torque limiter of claim 6, wherein: the spring is a wave spring, a disc spring or a spiral spring.
9. A self-resetting torsion limiter according to claim 1, wherein: one end of the ball, which faces the groove, is hemispherical, and the shape of the groove is correspondingly consistent.
10. A self-resetting torsion limiter according to claim 1, wherein: the spherical column is arranged between the output shaft and the synchronous wheel through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310523600.5A CN116641971A (en) | 2023-05-10 | 2023-05-10 | Self-resetting torsion limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310523600.5A CN116641971A (en) | 2023-05-10 | 2023-05-10 | Self-resetting torsion limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116641971A true CN116641971A (en) | 2023-08-25 |
Family
ID=87619469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310523600.5A Pending CN116641971A (en) | 2023-05-10 | 2023-05-10 | Self-resetting torsion limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116641971A (en) |
-
2023
- 2023-05-10 CN CN202310523600.5A patent/CN116641971A/en active Pending
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